13 - 9 + 1 - 5, 17 + 5 + 4 - 26, 21 - 9 + 8 - 20, 20 - 9 + 6 - 17, 19 - 3 + 5 - 21, 26 + 7 - 9 - 24,

Elementary A (-9= -10+1)

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